but that's what we learned about the fbi's piece in this. >> is it our understanding that the fbi investigation into that side of it is the reason this had to happen today. and with some urgency, that it was going to become widely known, if not publicly known? >> we haven't been able to confirm that direct link. we've spoken to law enforcement officials who have made a roundabout link into this, but no one has said that the reason he's stepping down is because there was an fbi investigation into this woman as he's announcing his extramarital affairs. the timing piece of it while this fbi investigation may have been a factor, we haven't been told it was the factor that led him to make this announcement today. >> with absent the fbi investigation, had that not happened, the fact of the affair, would that be dangerous enough to somebody in the job as being head of the cia that that itself would cause -- would force a resignation just because of the threat of black mail or anything else that might promise it? >> we did speak to law enforcement officials. they said that blackmail is a concern whenev